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[NSE-855] allocate large block of memory for all reducer #881 #894
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…stream Implemented fill by reducer
…into shuffle_opt_hugepage Conflicts: native-sql-engine/cpp/CMakeLists.txt native-sql-engine/cpp/src/benchmarks/shuffle_split_benchmark.cc native-sql-engine/cpp/src/shuffle/splitter.cc
…rue once allocated. skip the initialize during split fix validity buffer bug
remove nullcnt
use uint32 as row number size
Signed-off-by: Yuan Zhou <yuan.zhou@intel.com>
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Note: this patch also fixed #904 |
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allocate a large block of buffer, then slice for each reducer and each column. Arrow still doesn't support 2M alignment, so large page isn't enabled.